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Regular Direct-Homework Quiz (14/06/2019)
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Regular Direct-B Tech-Homework Quiz (13/06/2019)Regular Direct- B.Tech level- HomeWork Quiz (28/05/2019)Regular Direct Homework - 12-04-19The price of electricity has risen (1) ______ over the last year. A) specially | B) obviously | C) significantly | D) remarkably The heavy rain led to floods, (2) ______ a lot of trouble for local farmers. A) causing | B) making | C) resulting | D) affecting I have never seen (3) ______ a beautiful sunset in my entire life! A) as | B) like | C) so | D) such It is very (4) ______ that some people still don't believe in climate change. A) doubtful | B) suspicious | C) worrying | D) uncertain My brother is learning how to (5) ______ a small business. A) adjust | B) run | C) manage | D) direct Can you (6) ______ the person who took your bag? A) inform | B) identify | C) tell | D) know On a daily (7) ______, we should try to use less plastic. A) basis | B) motive | C) cause | D) method Regular exercise and a healthy diet are very (8) ______ for your heart. A) rewarding | B) valuable | C) beneficial | D) productive She was (9) ______ to win the race, so she practiced every single day. A) fixed | B) decided | C) committed | D) determined An (10) ______ student spends about three hours on homework every evening. A) everyday | B) average | C) normal | D) regular7.017 Fingernail Policy for ASC Personnel with Direct Patient Contact The surgical center applies this policy equitably and inclusively, and management expects staff to do so in good faith. Purpose: To prevent infection by ensuring proper hand and nail hygiene among ASC staff with direct patient contact. Policy: All ASC staff with direct patient contact must maintain clean and well-groomed fingernails and a healthy hand skin condition. Artificial Nails The ASC defines Artificial nails as press-on, extenders, studs, stones, or other objects positioned on top of the natural nail that are elevated and irregular. These are not allowed as they can be a potential source of infection and can also inhibit proper hand hygiene. Nail Enhancements The ASC defines Nail enhancements as nail paint, gel, and shellac. These are allowed, as evidence against them is weak/moderate and inconsistent, as long as they are undamaged, free of chipping, adequately maintained, and do not interfere with proper hand hygiene, job performance, or glove integrity. Staff must ensure that their nails are trimmed, clean, rounded, and at a length that does not inhibit them from performing their duties or putting themselves or their patient at risk for exposure. Staff must wash their hands with soap and water or use an alcohol-based hand rub before and after each patient encounter and after any activity that may contaminate the hands. Staff must report any cuts, sores, or other skin conditions that may prevent them from maintaining proper hand hygiene to the supervisor. Implementation: The infection Control Nurse or designee will educate staff on hand and nail hygiene, proper hand-washing techniques, and alcohol-based rubs. Supervisors will monitor staff compliance with the policy and provide corrective action as needed. The ASC will provide hand hygiene products and education materials for staff. Evaluation: The infection Control Nurse or designee will evaluate the effectiveness of this policy annually and through regular staff education and monitoring of staff compliance. Nurses are reminded of the standards of nursing practice specified in 22 Texas Administrative Code Rule 217.11 (B)(O), which includes Implementing measures to promote a safe environment for clients and others and Implementing measures to prevent exposure to infectious pathogens and communicable conditions. Reference: AORN INC. (2022). Guidelines for perioperative practice.1. What is the primary goal of the board regarding compensation for professional employees? A) To minimize costs B) To attract and retain committed personnel C) To follow state regulations only D) To offer the highest salaries in the district 2. How is the compensation of certificated personnel determined? A) Based solely on local market rates B) Based on the state salary schedule with local supplements C) Based on the number of students taught D) At the discretion of the principal 3. When must teachers receive written notification of their employment status for the following school year? A) After the school year ends B) On the last day of school C) On or before the date the district extends offers of teaching employment D) At the start of the school year 4. Who has the authority to establish the compensation for support staff? A) The school board B) The superintendent C) The principal D) The teachers’ union 5. How often are employees paid? A) Weekly B) Monthly C) Semi-monthly D) Annually 6. What happens if a regular payday falls on a company-observed holiday? A) Employees are paid the following week B) Employees are paid on the last business day preceding that date C) Employees receive double pay D) Payments are canceled 7. Which of the following is NOT a mandatory deduction from an employee’s compensation? A) Federal income taxes B) State income taxes C) Employee bonuses D) FICA taxes 8. How should an employee report an improper deduction from their pay? A) Ignore it B) Report it to human resources or their direct supervisor C) Discuss it with colleagues D) Write a letter to the school board 9. Which of the following statements is true regarding exempt employees’ salaries? A) Their salary can be reduced for any reason. B) They receive full salary regardless of the number of hours worked in a week. C) Their pay is based on the number of days they work. D) They are paid hourly. 10. Under what condition can the district reduce an exempt employee's salary? A) If the employee takes vacation days B) If the employee is absent for personal reasons for one or more full days C) For minor conduct infractions D) If the employee decides to leave early7.015 Hand Hygiene: Practice observation of hand hygiene compliance via the use of a hand hygiene survey tool to be reviewed quarterly at the QAPI committee. (Chapter 10.14 Handwashing & Surgical Antisepsis) Continue infection control education through ongoing orientation to center staff routinely and annual mandatory in-service. Continue to promote hand hygiene awareness for patients and staff by means of educational materials placed throughout the center which references the CDC/WHO guidelines. Needle-stick Injuries: (Refer to Exposure Control Plan) Use of designated safety engineered needles for injections (safety glide needles for injection and autoguard IV catheters) and blood draw. New employee and annual clinical competency for injections will be provided to all staff. The staff will be trained yearly on OSHA, blood borne pathogens and PPE. 7.016 Hand Hygiene Quality in the ASCs: based on AORN (Association of periOperative Registered Nurses) Standards and guidelines Policy: All ASC staff, including physicians, nurses, and other healthcare workers, are required to perform hand hygiene before and after any direct contact with patients, before and after any procedure, and after any contact with potentially contaminated items or surfaces. Hand hygiene must be performed using either an alcohol-based hand rub or soap and water. The alcohol-based hand rub must contain at least 60% alcohol. Staff members must ensure that their hands are free of debris and visible dirt before performing hand hygiene. Hand hygiene must be performed for a minimum of 20 seconds, and hands must be dried thoroughly after washing. Staff members must be trained on proper hand hygiene techniques and will be educated on a regular basis to ensure compliance with this policy. All staff members must comply with this policy and demonstrate compliance during inspections by ASC management and regulatory agencies. Any staff member who fails to comply with this policy will be subject to disciplinary action. ASC management will monitor compliance with this policy through regular inspections and audits and will take appropriate action to address any noncompliance issues. The ASC will maintain records of staff compliance with this policy as part of its infection control program. The ASC will review and update this policy on an annual basis or more frequently as needed to ensure that it remains current with the latest guidelines and standards for hand hygiene quality.Make mcq quiz with 4 option in which one is correct -'10 Basis of Material Science • .....;;;";;;"~~;;,,;;,,,,;.;.,,;;,,,;,,;.;,.,------------ 6. Temporary materials: Some materials are meant to be placed in the oral cavity for a short period of time for different reasons. • Temporary crowns: While a permanent crown is prepared in the dental laboratory, the patient must wait for few days before it can be fabricated and cemented into place. Does patient experience any problems during this time period? If the tooth is vital (the pulp is alive), the patient is likely to experience pain and sensitivity while eating and drinking, also it looks unesthetic. What can be done to solve this problem? A temporary crown is placed before the patient leaves the clinic. It is constructed and luted in the same appointment in which the crown preparation is done. Temporary crowns are not very strong or esthetic but they serve adequately till the permanent crown is ready to be cemented. • Temporary restorations: Sometimes it is difficult to decide immediately the best line of treatment for a particular tooth. The exact condition of the pulp may not be obvious to the dentist from the patient's symptoms. A dentist removes all or part of the decay and then places a temporary restoration to have time to observe the behaviour of the pulp or to give the pilip time to heal before deciding the further treatment required. Classification based on Location of Fabrication 4,9 Materials can be classified based on the location of fabrication into: • Direct restorative materials. • Indirect restorative materials Direct restorative materials: They include those materials which are used to restore cavity preparations directly in the oral cavity (Box 1.5). Box 1.5: Examples of direct restorative materials Amalgam, composites, glass ionomer and other materials, which set by chemical reactions in the mouth. Indirect restorative materials: It includes those restorations which must be fabricated outside the mouth, indirectly on a cast/ model/ die, because their processing condition would harm oral tissues. Materials used in the construction of such prosthesis are called indirect restorative materials (Box 1.6). Box 1.6: Examples of indirect restorative materials Gold inlays, crowns of metal, ceramic and polymers, which are processed at elevated temperatures. Some indirect composite restorations can be processed under specific wavelength of light, e.g. Ceramage. Classification based on Longevity of Use 1. Permanent restorations: These restorations are not planned to be replaced for a particular time period. Though they are referred to as permanent, actually they are not, e.g. fillings, crowns, bridges and dentures do not last forever (Fig. 1.5). 2. Temporary restorations: These restorations are planned to be replaced in a short period of time, such as few days to weeks. For ~ Permanent C/) c c -.2 0 c- :;::; Cll co Interim ~ Q; 0 .8ll::1iJ C/) o~ Cll a:: c:=:J Temporary Time period Fig. 1.5: Diagram depicting the time period of use of a restoration. (Arrow in permanent restoration depicts that such restorations are not planned to be replaced for a long period of time.) Introducton to Dental Materials Dental materials Box 1.7: Characteristics of metals 1. High thermal and electrical conductivity 2. Ductility (pure metals are very soft and they can be bent without breaking) 3. Opacity (they do not transmit light) 4. Luster (they have a surface that strongly reflects light and appears bright and shiny) 5. They tend to dissolve to some extent in water or other aqueous solutions, producing cations. 6. All metals are white (actually gray) except for gold, which is yellow, and copper, which is reddish. 7. All metals are solid at room temperature except mercury, which is liquid at room temperature and is used with silver alloys as amalgam. 8. All metals have high melting temperatures because of high strength of the metallic bond that holds the atoms together. 3. Polymers 4. Composites Composites are mixtures of two or more of the first three classes in which the different components remain distinct from one another in the final structure. A common example is composite resin. Fig. 1.7a: Three-dimensional structure of iron (metal) Metals Metals are the oldest of the three classes of materials that have been used as dental materials. Metals are characterized by metallic bonds (Box 1.7) which will be discussed in the next chapter. Metals solidify with their atoms in a regular or crystalline arrangement (see Chapter 2), often in the form of a cube (Fig. 1.7a). example, temporary fillings done in a tooth during root canal treatment, which have to be replaced within 2-4 days during subsequent visits. They are used to protect the tooth and provide function till the final restoration is done. 3. Interim restoration: At times, dental treatment requires "long-term" definite temporary restorations or "interim" restorations. For examle, a 7-year-old child, met with trauma and fractured one of his central incisors. A large composite build- up may serve his immediate requirement until the root formation is completed and a permanent crown is placed. 5 Classification based on the Chemical Nature of the Material These are the atoms that make up a material and the way they are bonded together determine the properties of that materiaLS Weak bonds make for weak materials and vice versa (Table 1.4). Materials can be classified into different categories based on their primary atomic bonds (Fig. 1.6): 1. Metals 2. Ceramics Fig. 1.6: Classification of dental materials based on chemical nature 12 Basis of Material Science Box 1.9: Benefits of ceramics in dentistry 1. Many ceramic oxides are used as pigmenting agents. These oxides produce good range of colors. Due to this characteristic, we are able to match almost any tooth color with good esthetic results. 2. They are inert, i.e. not chemically reactive. This quality provides ceramics with good bio- compatibility. 3. Ceramic materials are translucent, like natural teeth. This translucency gives the ceramic crown a more natural appearance than any other dental material. Fig. 1.7b: Internal arrangement of tetrahedral structure of ceramic (silica) four large oxygen atoms surround smaller silicon atom Ceramics A ceramic is a compound formed by the union of a metallic and a non-metallic element (Box 1.8). Most of these materials are oxides, formed by the union of oxygen with metals such as silicon, aluminum, calcium and magnesium (Fig.1.7b). Ceramics may be simple or complex. Examples of simple ceramics are alumina and silica. Examples of complex ceramics are feldspar (potassium aluminum silicate) and kaolin (hydrated aluminum silicate). Ceramics may be crystalline or non- crystalline (i.e. amorphous). Porcelain is a specific type of ceramic used extensively in dentistry (Box 1.9). Box 1.8: Characteristics of ceramics 1. High melting points. 2. Brittleness, which means they cannot be bent or deformed (no sliding) to any extent without actually cracking and breaking. 3. They are poor conductor of heat and electricity. 4. They are chemically inert. 5. They have excellent esthetic result in terms of matching natural teeth. Fig. 1.8: Stucture of synthetic polymer Polymers They are the latest addition (early to mid- 1900s) to dental materials. Most of the polymers are nowadays synthesized by humans. Polymers are giant, long-chain organic molecules (Fig. 1.8). Polymers are characterized by covalent bonds within each molecule, giving them tremendous strength in a single direction. Try to break a nylon rope by pulling it! They are poor conductors of heat and electri- city. Most polymers have a structure containing thousands of carbon atoms linked together like beads on a string. Others, such as silicone polymers are formed with silicon-oxygen bonds. Introducton to Dental Materials Table 1.4: Characteristics of different materials 13 Characteristics Bond Properties Crystal structure Metals Metallic bonding High strength and hardness, high electrical and thermal conductivity BCC, FCC, or HCP unit cells Ceramics Ionic or covalent bonding, or both High hardness and stiffness, electrically insulating, refractory, and chemically inert Crystalline or amorphous Polymers Covalent bonding Low sensitivity, high electrical resistivity, and low thermal conductivity, strength and stiffness vary widely Amorphous and crystalline Composites Composites are combinations of any of the basic ceramic, metallic and polymeric materials (Box 1.10). Each material that makes up composites is called a phase. Their properties tend to be somewhere between those of their basic constituents and are used to enhance their performance, longevity and handling chracterstics. Box 1.10: Types of composites in dentistry 1. Ceramic - metallic composite: Tungsten carbide bur. 2. Metal - polymer composite: Die materials in dental laboratory. 3. Ceramic - polymer composite: Enamel, dentin, bone and restorative composites. A composite is a kind of "combination" of materials, which compliment each other. The properties lacking in one material are compensated by those of the other material. For example, restorative composite has two phases, namely resin and fillers. Teeth and bones are examples of natural composites. Enamel is a composite of hydroxyapatite (which is a ceramic material) and protein (which is a polymer). EVALUATION OF DENTAL MATERIALS Most manufacturers of dental materials maintain a quality assurance programme (As per international standard like ADA specifications) and materials are thoroughly tested before being released into the market for dental practitioner (Fig. 1.9). Laboratory Evaluations Most ADA/ ANSI specifications involve laboratory tests. The tests performed as per these specifications are useful but they all are performed in vitro, (carried out in the laboratory away from the clinical conditions) which have a lot of limitations in clinical practice.lO Clinical Notes 1. For example, most of the direct restorative materials are tested for their compressive strength but ultimately the material is subjected to a combination of compressive, tensile and shear stresses, which may decide the final success or failure of the material under masticatory load. 2. Similarly upper dentures mostly fracture along the midline because of bending. Hence a bending or transverse strength ~B-a-s-is-o-f-M-a-t-e-ria-I-S~c-ie-n-c-e-------------- ---------. test is far more meaningful for denture base materials than a compression test. Clinical Trials The majority of new materials are subjected to extensive clinical trials normally in co-operation with a dental college or hospital departments prior to their release. CONCLUSION As the number of available materials is going up, it is important that the dentist remains more aware about new products so that their judgement about the selection of material remains successful. Materials which have not been thoroughly evaluated should be avoided, specially with clinical dentistry falling under Consumer Protection Act (CPA). I Research and development I iI Manufacturer/analysis Ideal requirements for clinical use: Thermal, optical, mechanical, chemical, biological Available materials and their properties are evaluated Launch of new I product Choice and selection of material by the dentist Critical assessment based on clinical performance I I H feedback to I